Company lists · Data refreshed September 2026

Top 25 Sliding window manufacturers based in the United Kingdom

Name: Sliding window manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 455 companies tracked

RevenueBase identified 455 sliding window manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,763 professional contacts across them, including 801 with verified work emails. London is the largest hub.

This list covers sliding window manufacturers headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

455Companies

2,763Contacts tracked

801Verified emails

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The 25 largest sliding window manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 455 sliding window manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to sliding window manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Emplas Window Systems	Partial evidence	Wellingborough, United KingdomHQ checked Sep 30, 2026	201-500	117 contacts →
	Partial evidence “Emplas is the window and door fabricator of choice, offering a complete range of premium-quality, high-security, energy-efficient windows and doors for the trade installer, new…” Source: RevenueBase Database · checked Sep 30, 2026
2	KAT UK Macclesfield	Strong evidence	Macclesfield, United KingdomHQ checked Sep 30, 2026	51-200	82 contacts →
	Strong evidence “KAT UK is a Macclesfield based manufacturer of specialist glazing products, including Aluminium and PVCu bifold doors, sliding patio doors, entrance doors, French doors, windows…” Source: RevenueBase Database · checked Sep 30, 2026
3	Unique Window Systems LTD	Partial evidence	Leicester, United KingdomHQ checked Sep 30, 2026	201-500	71 contacts →
	Partial evidence “An award-winning designer, fabricator and installer of UPVC and aluminium windows, doors and curtain walling, Unique Window Systems Ltd specialises in the supply of quality…” Source: RevenueBase Database · checked Sep 30, 2026
4	Polyframe	Strong evidence	Lenwade, United KingdomHQ checked Sep 30, 2026	201-500	66 contacts →
	Strong evidence “Polyframe are a multi award-winning manufacturer of high quality windows, doors and conservatories.” Source: RevenueBase Database · checked Sep 30, 2026
5	JPJ Installations LTD	Partial evidence	Braintree, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Partial evidence “JPJ Installations Ltd are specialists in Aluminium Glazing Systems including Curtain Wall, Framing, Door and Window Systems.” Source: RevenueBase Database · checked Sep 30, 2026
6	Express Bi-Folding Doors	Partial evidence	Leeds, United KingdomHQ checked Sep 30, 2026	201-500	56 contacts →
	Partial evidence “Express Bi Folding Doors are the UK's leading manufacturer & installer of bespoke aluminium products.” Source: RevenueBase Database · checked Sep 30, 2026
7	Hazlemere Group	Partial evidence	High Wycombe, United KingdomHQ checked Sep 30, 2026	51-200	39 contacts →
	Partial evidence “Hazlemere is a family owned and run double glazing manufacturer and installer based in High Wycombe, Buckinghamshire.” Source: RevenueBase Database · checked Sep 30, 2026
8	Russell Timber Technology	Strong evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	51-200	39 contacts →
	Strong evidence “For over 55 years, Russell Timber Technology has been the UK’s leading manufacturer of energy efficient, sustainable, precision-engineered Timber and Alu-Clad windows, doors and…” Source: RevenueBase Database · checked Sep 30, 2026
9	Dekko Window Systems LTD	Strong evidence	Ashton-under-lyne, United KingdomHQ checked Sep 30, 2026	51-200	36 contacts →
	Strong evidence “DEKKO WINDOW SYSTEMS LIMITED Manufacturers of a wide range of glazing products for professional installation companies.” Source: RevenueBase Database · checked Sep 30, 2026
10	Joedan Windows & Doors	Indirect evidence	Tewkesbury, United KingdomHQ checked Sep 30, 2026	201-500	35 contacts →
	Indirect evidence “At Joedan, we are a family run business with Retail Design Centres across the Midlands and Southern England; to include a Manufacturing Facility and a Commercial Division.” Source: RevenueBase Database · checked Sep 30, 2026
11	Mumford & Wood LTD	Strong evidence	Tiptree, United KingdomHQ checked Sep 30, 2026	51-200	32 contacts →
	Strong evidence “Timber Windows and Doors Established in 1954 Mumford & Wood has since become the UK’s premier manufacturer of high quality timber windows and doors.” Source: RevenueBase Database · checked Sep 30, 2026
12	Cotswold Architectural Products	Partial evidence	Cheltenham, United KingdomHQ checked Sep 30, 2026	501-1,000	31 contacts →
	Partial evidence “Cotswold Architectural Products has been synonymous with excellence in the fenestration industry since 1976, when we became the first company in the UK to manufacture friction…” Source: RevenueBase Database · checked Sep 30, 2026
13	Everglade Windows LTD	Partial evidence	Greenford, United KingdomHQ checked Sep 30, 2026	51-200	27 contacts →
	Partial evidence “At Everglade Windows, we are devoted to progressive thinking and pushing boundaries.” Source: RevenueBase Database · checked Sep 30, 2026
14	Chigwell Window Centre PLC	Strong evidence	Forest Rd, United KingdomHQ checked Sep 30, 2026	51-200	27 contacts →
	Strong evidence “Established in 1996, Chigwell Window Centre PLC (part of Chigwell Group PLC) manufactures, supplies and installs aluminium and uPVC doors and windows for domestic, commercial and…” Source: RevenueBase Database · checked Sep 30, 2026
15	Arkoni Limited	Strong evidence	Brighouse, United KingdomHQ checked Sep 30, 2026	51-200	22 contacts →
	Strong evidence “Arkoni are the leading manufacturers of steel slimline, fire rated and non-fire rated, windows, doors and curtain walling for internal and external applications.” Source: RevenueBase Database · checked Sep 30, 2026
16	Futuremost Limited	Strong evidence	Portsmouth, United KingdomHQ checked Sep 30, 2026	11-50	22 contacts →
	Strong evidence “Manufacturers and installers of aluminium and uPVC windows, doors, shop fronts and screens.” Source: RevenueBase Database · checked Sep 30, 2026
17	Grabex Windows LTD	Strong evidence	Orpington, United KingdomHQ checked Sep 30, 2026	51-200	19 contacts →
	Strong evidence “We are an Orpington based manufacturer and installer of windows, doors, sliding & bifold systems, glass roofs and bespoke furniture for residential and trade customers from…” Source: RevenueBase Database · checked Sep 30, 2026
18	Salisbury Glass Centre Limited	Indirect evidence	Fordingbridge, United KingdomHQ checked Sep 30, 2026	11-50	19 contacts →
	Indirect evidence “SALISBURY GLASS CENTRE LIMITED is a company based out of Fordingbridge, Hampshire, United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
19	NEW World Developments Limited	Strong evidence	Ballymena, United KingdomHQ checked Sep 30, 2026	201-500	19 contacts →
	Strong evidence “NEW WORLD DEVELOPMENTS LIMITED manufactures a range of window and doors and is based out of Woodside Road Industrial Estate, Ballymena, CO.ANTRIM, United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
20	Tradeglaze Lincoln	Strong evidence	Lincoln, United KingdomHQ checked Sep 30, 2026	51-200	18 contacts →
	Strong evidence “We are a manufacturer and FENSA-registered installer of uPVC and aluminium doors, windows, bifold doors, conservatories and curtain walling.” Source: RevenueBase Database · checked Sep 30, 2026
21	Norrsken Windows	Partial evidence	Poole, United KingdomHQ checked Sep 30, 2026	11-50	17 contacts →
	Partial evidence “Norrsken provides the finest quality timber windows and doors Our timber products are highly engineered, superbly insulated and extremely efficient.” Source: RevenueBase Database · checked Sep 30, 2026
22	Allan Brothers LTD	Partial evidence	Berwick-upon-tweed, United KingdomHQ checked Sep 30, 2026	51-200	17 contacts →
	Partial evidence “Allan Brothers is the longest established window company in the UK, with unparalleled expertise in timber craftsmanship.” Source: RevenueBase Database · checked Sep 30, 2026
23	Kingfisher Windows	Partial evidence	Bradford, United KingdomHQ checked Sep 30, 2026	11-50	17 contacts →
	Partial evidence “Since 1989 we’ve been fabricating and manufacturing high performance, beautifully crafted windows, doors and conservatories throughout Yorkshire, Leeds, Halifax, Bradford…” Source: RevenueBase Database · checked Sep 30, 2026
24	Alternative Windows	Partial evidence	Leeds, United KingdomHQ checked Sep 30, 2026	51-200	17 contacts →
	Partial evidence “Alternative Windows are specialists in the design and installation of bespoke PVC and Aluminium Window, Door and Aluminium Curtain Walling to both the domestic and the commercial…” Source: RevenueBase Database · checked Sep 30, 2026
25	Windowworx	Partial evidence	Reading, United KingdomHQ checked Sep 30, 2026	11-50	17 contacts →
	Partial evidence “WindowWorx \| Premium Aluminium Doors & Windows At WindowWorx we design, supply and install premium aluminium doors, windows and glazing systems for homes and commercial projects…” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sliding window manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names sliding window manufacturers.
Partial evidence: Its own public description names part of sliding window manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sliding window manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 455 sliding window manufacturers based in the United Kingdom

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Sliding window manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

29.0%Verified-email coverage

6.1Average contacts per company

11-50Median size (employees)

6.4%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

211

11-50

164

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 455 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sliding window manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “sliding window manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sliding window manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among sliding window manufacturers, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 801 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sliding window manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many sliding window manufacturers are there based in the United Kingdom?

RevenueBase identified 455 sliding window manufacturers headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Emplas Window Systems, headquartered in Wellingborough, tops this list with the largest team on record.

Which city has the most sliding window manufacturers?

London leads with 29 headquartered companies, followed by Leeds (11) and Leicester (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 801 verified decision-maker contacts tracked across these 455 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.